Please apply the following patch series for smc to netdev's net-next tree. This v2 is a resend of the code contained in v1 but with an updated cover letter to describe why we have chosen to use the generic netlink mechanism to access the smc protocol's statistic data. The patchset adds statistic support to the SMC protocol. Per-cpu variables are used to collect the statistic information for better performance and for reducing concurrency pitfalls. The code that is collecting statistic data is implemented in macros to increase code reuse and readability. The generic netlink mechanism in SMC is extended to provide the collected statistics to userspace. Network namespace awareness is also part of the statistics implementation. SMC is a protocol interacting with PCI devices (like RoCE Cards) and runs on top of the TCP protocol. As SMC is a network protocol and not an ethernet device driver, we decided to use the generic netlink interface. This should be comparable to what other protocols in the net subsystem like tipc, ncsi, ieee802154 or tcp, et al, do. There is already an established internal generic netlink interface mechanism in SMC which is used to collect SMC Protocol internal information. This patchset extends that existing mechanism. Guvenc Gulce (4): net/smc: Add SMC statistics support net/smc: Add netlink support for SMC statistics net/smc: Add netlink support for SMC fallback statistics net/smc: Make SMC statistics network namespace aware include/net/net_namespace.h | 4 + include/net/netns/smc.h | 16 ++ include/uapi/linux/smc.h | 83 ++++++++ net/smc/Makefile | 2 +- net/smc/af_smc.c | 102 +++++++-- net/smc/smc_core.c | 13 +- net/smc/smc_netlink.c | 11 + net/smc/smc_netlink.h | 2 +- net/smc/smc_rx.c | 8 + net/smc/smc_stats.c | 413 ++++++++++++++++++++++++++++++++++++ net/smc/smc_stats.h | 266 +++++++++++++++++++++++ net/smc/smc_tx.c | 18 +- 12 files changed, 917 insertions(+), 21 deletions(-) create mode 100644 include/net/netns/smc.h create mode 100644 net/smc/smc_stats.c create mode 100644 net/smc/smc_stats.h -- 2.25.1
